Speed-regulator



(No Model.)

T; M. FOOTE.

SPEED REGULATOR. No. 453,591.

Patented June 2,1891.

UNITED STATES PATENT OEEicE,

THEODORE M. FOOTE, OF BOSTON, MASSACHUSETTS.

SPEED-REGULATOR.

SPECIFICATION forming part of Letters Patent No. 453,591, dated June 2,1891.

Application filed May 5, 1890. Serial No. 350,577. (No model.)

To all whom it may concern:

Be it known that I, THEODORE M. Poem, of Boston, in the county ofSuffolk and State of Massachusetts, have in vented a new and usefulImprovement in Speed Regulators, of which the following, taken inconnection with the accompanying drawings, is a specification.

The invention which forms the subject of this application for a patentof the United States is an improvement upon the speedregulatordescribedand claimed in Letters Patent No. 383,452, granted to me May 29, 1888,and has for its object to provide means for ad j usting the weights 011the arms of the governor while the machine is in motion and to enableone of the pulleys to be dispensed with.

To this end the invention consists in certain peculiarities in theconstruction, arrangement, and combination of parts, substantially ashereinafter described, and particularly pointed out in the subjoinedclaims.

In the accompanying drawings, Figure 1 is a view in elevation of thedevice, a part of the drum supporting the brakeshoes being shown insection. Fig. 2 is a plan view of the device for moving the slidingcollar, and

Fig. 3 is a transverse sectional view of the drum.

In these several figures the same letters refer to the same parts.

A designates the driving-shaft of a dynamo or of any other machine whosespeed is to be regulated, suitably supported upon standards B 13.

C is the driving-pulley, which rotates at a speed in excess of thatdesired for the shaft A and is fixedly secured to a sleeve D, whichcarries a cylindrical drum E. Said drum forms one member of a frictiondevice, the other members of said friction device consisting of a seriesof brake-shoes G, constructed of springy material and bolted orotherwise suitably secured to a wheel F, which is fast on said shaft A,and has attached to it a shell Ewhich covers the drum E and has its faceadapted to the reception of the belt by which it is connected to thedynamo or other driver mechanism. These brake-shoes Gr are each facedwith a fabric g, the inner surface of which is at all times infrictional contact with the outer surface of wheel E, and each brakeshoeis controlled by a lever H, the inner exthe flanges bear.

tremity of which is so constructed or provided with a device, as 72., asto be capable of bearing upon the upper surface of said brakeshoe,theouter end of each of said levers being connected with a slidingcollar J by means of links I. The collar J is forced in one direction bythe coiled springj, one end of which is in contact with the outer end ofsaid collar and in the other direction by the governorarms K, with whichthe collar is connected by arms L, which bear against the inner end ofthe collar, said governor-arms being fulcrnined to the wheel F at 7;.

Thus far the construction is substantially similar to my former patentabove referred to, and in said patent I have described a device foradjusting the weights on the governor-arms; but the device which I willnow proceed to describe I have found to be better adapted for practicaluse. Said device consists of a sleeve M, sliding on the shaft A andconnected by link-levers N to weights 0 on the governor-arms. In orderto enable this sleeve M to be moved when the shaft A is rotating, Iprovide two plates P, supported above the shaft A and paralleltherewith, said plates forming a guide for a slide R, which moveslongitudinally between them. Attached to this slide is a U-shaped pieceS, extending downward vertically, and the arms of this piece lie betweenflanges a a on the sleeve M, and each carries a roller 1), against whichA vertical lever T, pivoted below the shaft, carries a horizontal bar U,which lies between pins 0 c on the slide R. By means of this lever theslide can be moved backward and forward.

The operation of my invention is as follows: The d riving-pulley Odriven at a speed in excess of that desired for the shaft A. The sleeveM is so set that the springj will cause collar J, by means of links Iand levers H, to force the brakeshoes G against drum E, and therebycreate sufficientfrietion to cause said. shaft A to rotate with pulleyC. \Vhen collar J moved sufficiently near wheel F to force said shoesinto greater frictional contact with drum E, links I will be broughtinto such relation to the lovers II, pressing on said friction-shoes,that the membersdrum E and friction-shoes-of the friction device will beheld in the required frictional contact until speed of shaft A isaccurately adjusted.

With the above-described governor-regulating device the speed of shaft Ais readily varied by moving the lever T in such direction as to bringsleeve M nearer to or farther from the f ulcra of the governor-arrns,whereby the force of springs j upon the governors is varied.

Having thus described my invention, what I claim, and desire to secureby Letters Patent of the United States, is-

1. The combination, with the shaft A, its driving mechanism, frictiondevices, a sliding collar connected with said friction devices, andmeans for forcing said collar in one direction, of means for forcingsaid collar in the opposite direction, consisting of governor-- arms,each pressing at one end against said collar, weights sliding on saidgovernor-arms, a sliding sleeve on the shaft A,and links connecting theweights to the sleeves.

2. The combination,with the shaft A, driving mechanism therefor,friction devices, a sliding collar connected with said friction devices,and a spring encircling said shaft and tending to force the collar inone direction, of. governorarms one end of each of which presses againstthe inner end of said sliding collar, a sleeve on the shaft, connectedwith said governor-arms and having flanges, plates supported above saidsleeve, a slide between said sleeve, a slide between said plates, a Ushaped piece connected to said slide, having its arms located betweensaid flanges of the sleeve and provided with rollers, and a lever formoving said sleeve back and forth.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing witnesses, on this 25th day of April, A. D.1890.

THEODORE M. FOOTE.

itnesses:

FRANK G. PARKER, ALEX. L. HAYES.

